public class People {
    int m,n; //A
   public People(){
       m=n=10;
   }
    void f() {
        if (m == n)
            n = +m; //C
        else
            n = n - m; //D
    }}
abstract class Takecare {
    protected void speakHello() {} //A
  
    static int f() {return 0;} //C
    abstract float g(); //D
}
class i{
    int a;
    public i(int a)
    {
        this.a=a;
    }
}
class m extends A{
    public m(int a) {
      super();
    }
}